Python：爲什麼在if語句中該數字應該是字符串？

Question

我是Python新手，我正在閱讀一些關於它的示例。然而，下面

print "You enter a dark room with two doors. Do you go through door #1 or door #2?" 

door = raw_input("> ") 

if door == "1": 
    print "There's a giant bear here eating a cheese cake. What do you do?" 
    print "1. Take the cake." 
    print "2. Scream at the bear." 

    bear = raw_input("> ") 

    if bear == "1": 
     print "The bear eats your face off. Good job!" 
    elif bear == "2": 
     print "The bear eats your legs off. Good job!" 
    else: 
     print "Well, doing %s is probably better. Bear runs away." % bear 

elif door == "2": 
    print "You stare into the endless abyss at Cthulhu's retina." 
    print "1. Blueberries." 
    print "2. Yellow jacket clothespins." 
    print "3. Understanding revolvers yelling melodies." 

    insanity = raw_input("> ") 

    if insanity == "1" or insanity == "2": 
     print "Your body survives powered by a mind of jello. Good job!" 
    else: 
     print "The insanity rots your eyes into a pool of muck. Good job!" 

else: 
    print "You stumble around and fall on a knife and die. Good job!" 

一個例子，我很好奇，之所以if door == "1":這個人是雙引號括起來，而不僅僅是一個號碼一個。我試圖刪除雙引號，如果輸入是一個，程序將打印"You stumble around and fall on a knife and die. Good job!"。

Answer 1

函數raw_input()'從輸入中讀取一行，將其轉換爲字符串（剝離尾隨的換行符），並返回'。有關功能here的文檔。

因此，您的條件語句將檢查由raw_input()返回的值總是字符串。